361 lines
8.9 KiB
JavaScript
361 lines
8.9 KiB
JavaScript
var shell = null;
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function blash ()
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{
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/************ ATTRIBUTES **************/
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/** Object containing the parsed JSON configuration object */
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this.json = {};
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/** Shell window object */
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this.window = document.getElementById ( "blashWindow" );
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/** Array containing the codes of the shell commands */
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this.commands = new Array();
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/** Escape sequences to be parsed in the prompt text */
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this.promptSequences = new Array();
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/** Array containing the history of given commands */
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this.history = new Array();
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/** Index to the current history element */
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this.history_index = -1;
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/** Current path */
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this.path = '/';
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/** Element containing the output of the command */
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this.cmdOut = document.getElementById ( "blashCmdOut" );
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/** Element containing the text of the prompt */
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this.promptText = document.getElementById ( "promptText" );
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/** Input field used as prompt */
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this.prompt = document.getElementsByName ( "blashPrompt" )[0];
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/** Counter of the open <span> tags when replacing the colours in the command prompt */
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this.__open_spans = 0;
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/** Check if this is the first command given in this session (for fixing <br/> stuff) */
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this.__first_cmd = true;
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/**************************************/
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this.loadCommand = function ( cmd )
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{
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var cmd_file = window.location.href;
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cmd_file = cmd_file.replace ( /\/([a-zA-Z\.]+)$/, '/commands/' + cmd + ".json" );
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var http = new XMLHttpRequest();
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http.open ( "GET", cmd_file, true );
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http.onreadystatechange = function ()
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{
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if ( http.readyState == 4 && http.status == 200 )
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{
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shell.commands.push ( eval ( '(' + http.responseText + ')' ));
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}
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}
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http.send ( null );
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}
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this.prompt.focus();
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var json_config = window.location.href;
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json_config = json_config.replace ( /\/([a-zA-Z\.]+)$/, '/blash.json' );
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var http = new XMLHttpRequest();
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http.open ( "GET", json_config, true );
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http.onreadystatechange = function ()
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{
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if ( http.readyState == 4 && http.status == 200 )
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{
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shell.json = eval ( '(' + http.responseText + ')' );
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shell.promptText.innerHTML = ( shell.json.promptText ) ? shell.json.promptText : "[%n@%m %W] $ ";
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shell.promptText.innerHTML = shell.unescapePrompt ( promptText.innerHTML, shell.json.promptSequences );
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if ( shell.json.banner.length > 0 )
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{
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var banner = document.createElement ( "span" );
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banner.setAttribute ( "id", "banner" );
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banner.innerHTML = shell.json.banner;
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shell.window.insertBefore ( banner, shell.promptText );
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}
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for ( var i in shell.json.commands )
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{
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shell.loadCommand ( shell.json.commands[i] );
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}
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}
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}
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http.send ( null );
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this.getKey = function ( e )
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{
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var evt = ( window.event ) ? window.event : e;
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var key = ( evt.charCode ) ? evt.charCode : evt.keyCode;
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if ( key == 13 || key == 10 )
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{
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if ( this.prompt.value.length != 0 )
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{
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this.prompt.value.match ( /^([^\s]+)\s*(.*)$/ );
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var cmd = RegExp.$1;
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var arg = RegExp.$2;
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var cmd_found = false;
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this.history.push ( this.prompt.value );
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this.history_index = -1;
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for ( i=0; i < this.commands.length && !cmd_found; i++ )
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{
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if ( this.commands[i].name == cmd )
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{
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cmd_found = true;
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var out = this.commands[i].action ( arg );
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if ( out.length > 0 )
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{
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this.cmdOut.innerHTML = out;
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}
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}
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}
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if ( !cmd_found )
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{
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this.cmdOut.innerHTML = this.json.shellName + ": command not found: " + cmd + '<br/>';
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}
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var value = this.prompt.value;
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var out = this.cmdOut.innerHTML;
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var text = ( shell.json.promptText ) ? shell.json.promptText : "[%n@%m %W] $ ";
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text = shell.unescapePrompt ( text, shell.json.promptSequences );
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this.window.removeChild ( this.prompt );
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this.window.removeChild ( this.cmdOut );
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if ( this.__first_cmd )
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{
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this.window.innerHTML += value + '<br/>' + out + text;
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this.__first_cmd = false;
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} else {
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if ( out )
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{
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if ( out.match ( /^\s*<br.?>\s*/ ))
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{
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out = '';
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}
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}
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this.window.innerHTML += value + '<br/>' + out + text;
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}
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this.prompt = document.createElement ( 'input' );
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this.prompt.setAttribute ( 'name', 'blashPrompt' );
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this.prompt.setAttribute ( 'type', 'text' );
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this.prompt.setAttribute ( 'class', 'promptInput' );
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this.prompt.setAttribute ( 'autocomplete', 'off' );
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this.prompt.setAttribute ( 'onkeydown', 'shell.getKey ( event )' );
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this.prompt.setAttribute ( 'onkeyup', 'this.focus()' );
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this.prompt.setAttribute ( 'onblur', 'return false' );
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this.cmdOut = document.createElement ( 'div' );
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this.cmdOut.setAttribute ( 'id', 'blashCmdOut' );
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this.cmdOut.setAttribute ( 'class', 'blashCmdOut' );
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this.cmdOut.innerHTML = '<br/>';
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this.window.appendChild ( this.prompt );
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this.window.appendChild ( this.cmdOut );
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this.prompt.focus();
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}
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} else if ( key == 38 || key == 40 ) {
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if ( key == 38 )
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{
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if ( this.history_index < 0 )
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{
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this.history_index = this.history.length - 1;
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this.prompt.value = this.history[ this.history_index ];
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} else if ( this.history_index == 0 ) {
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// We're already on the first history element
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} else {
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this.history_index--;
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this.prompt.value = this.history[ this.history_index ];
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}
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} else if ( key == 40 ) {
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if ( this.history_index < 0 )
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{
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// We're already on the last element, don't do anything
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} else if ( this.history_index == this.history.length - 1 ) {
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this.prompt.value = '';
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} else {
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this.history_index++;
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this.prompt.value = this.history[ this.history_index ];
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}
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}
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this.prompt.focus();
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} else if ( key == 9 ) {
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this.prompt.focus();
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if ( this.prompt.value.match ( /\s(.*)$/ ))
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{
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var arg = RegExp.$1;
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var path = arg;
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var dirs = new Array();
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for ( var i in this.json.directories )
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{
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if ( arg.match ( /^[^\/]/ ) )
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{
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path = this.path + '/' + arg;
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path = path.replace ( /\/+/g, '/' );
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}
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var re = new RegExp ( '^' + path + '[^/]*$' );
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if ( this.json.directories[i].path.match ( re ))
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{
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dirs.push ({
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'name' : this.json.directories[i].path,
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'type' : this.json.directories[i].type,
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});
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}
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}
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if ( dirs.length == 1 ) {
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this.prompt.value = this.prompt.value.replace ( arg, dirs[0].name + (( dirs[0].type == 'directory' ) ? '/' : '' ));
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} else {
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this.cmdOut.innerHTML = '';
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for ( var i in dirs )
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{
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this.cmdOut.innerHTML += "<br/>\n" + dirs[i].name;
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}
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}
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} else {
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var cmds = new Array();
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for ( var i in this.commands )
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{
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var re = new RegExp ( '^' + this.prompt.value );
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if ( this.commands[i].name.match ( re ))
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{
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cmds.push ( this.commands[i].name );
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}
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}
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if ( cmds.length == 0 )
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{
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this.cmdOut.innerHTML = '<br/>Sorry, no matches for `' + this.prompt.value + "'";
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} else if ( cmds.length == 1 ) {
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this.prompt.value = cmds[0] + ' ';
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} else {
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this.cmdOut.innerHTML = '';
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for ( var i in cmds )
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{
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this.cmdOut.innerHTML += "<br/>\n" + cmds[i];
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}
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}
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}
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this.prompt.focus();
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setTimeout ( function() { shell.prompt.focus(); }, 1 );
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if ( this.prompt.setSelectionRange )
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{
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this.prompt.setSelectionRange ( this.prompt.value.length, this.prompt.value.length );
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}
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return false;
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}
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this.prompt.focus();
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}
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this.unescapePrompt = function ( prompt, sequences )
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{
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var re = new RegExp ( "([^\]?)#\{([0-9]+)\}" );
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while ( prompt.match ( re ))
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{
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if ( this.__open_spans > 0 )
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{
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prompt = prompt.replace ( re, RegExp.$1 + "</span><span style=\"color: #" + RegExp.$2 + "\">" );
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} else {
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prompt = prompt.replace ( re, RegExp.$1 + "<span style=\"color: #" + RegExp.$2 + "\">" );
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this.__open_spans++;
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}
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}
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if ( this.__open_spans > 0 )
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{
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prompt = prompt + "</span>";
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}
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for ( i=0; i < sequences.length; i++ )
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{
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prompt = this.unescapePromptSequence ( prompt, sequences[i].sequence, sequences[i].text(), sequences[i].default_text );
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}
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return prompt;
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}
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this.unescapePromptSequence = function ( prompt, sequence, text, default_text )
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{
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var re = new RegExp ( "([^\]?)" + sequence, "g" );
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prompt.replace ( /%W/g, this.path );
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if ( prompt.match ( re ))
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{
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prompt = prompt.replace ( re, (( text ) ? RegExp.$1 + text : RegExp.$1 + default_text ));
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}
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return prompt;
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}
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this.expandPath = function ( arg )
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{
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if ( arg.match ( /^[^\/]/ ))
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{
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arg = this.path + '/' + arg;
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}
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arg = arg.replace ( /\/+/, '/' );
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if ( arg != '/' )
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{
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arg = arg.replace ( /\/*$/, '' );
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}
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while ( arg.match ( /^(.+?\/?\.\.)/ ))
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{
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var part = RegExp.$1;
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if ( arg.match ( /^(.+?)\/?\.\./ ))
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{
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if ( RegExp.$1 == '/' )
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{
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arg = arg.replace ( part, '/' );
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} else {
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part.match ( /^(.*)\/[^\/]*\/\.\..*$/ );
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var sup = RegExp.$1;
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arg = arg.replace ( part, sup );
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if ( arg.length == 0 )
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{
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arg = '/';
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}
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}
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}
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}
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return arg;
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}
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}
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